山西省各市森林生态效益分析 会计财务管理专业VIP免费

山西省各市森林生态效益分析摘要：因为森林不仅具有直接价值还有巨大的间接价值，所以森林生态系统服务功能评估是目前森林生态系统研究的一大热点。基于山西省2016年森林资源2类调查数据，本文选取涵养水源、保育土壤、固碳释氧、林木积累营养物质、净化大气环境、生物多样性保护和森林游憩7项指标，运用了单因素方差分析的方法，将11个地级市划分为晋北地区、晋中地区、晋南地区。并对山西省11个地级市的主要植被类型生态系统服务功能进行评估。结果表明，山西省各地级市森林生态系统服务功能，由强到弱依次为：晋南地区、晋中地区、晋北地区，且仅在固碳释氧方面存在显著的区域差异。经分析得出影响各地级市单位面积物质量差异的主要因素是森林资源的结构组成、气候因素和区域性要素。关键词：森林生态系统服务功能;物质量;单位面积物质量PAGE\*MERGEFORMAT2AnalysisofforestecologicalbenefitineachcityofShanxiProvinceABSTRACT：Becauseforesthasnotonlydirectvalue,butalsohugeindirectvalue,sotheevaluationofforestecosystemservicefunctionisahotspotintheresearchofforestecosystem.BasedonthetwotypesofforestresourcessurveydataofShanxiProvincein2016,thispaperselectedsevenindicators,includingwaterconservation,soilconservation,carbonfixationandoxygenrelease,forestaccumulationofnutrients,purificationofatmosphericenvironment,biodiversityprotectionandforestrecreation,andusedthemethodofone-wayANOVAtodivide11prefecturelevelcitiesintonorthernShanxi,CentralShanxiandsouthernShanxi.Theecosystemservicefunctionofmainvegetationtypesin11prefecturelevelcitiesofShanxiProvincewasevaluated.TheresultsshowedthattheforestecosystemservicefunctionofdifferentcitiesinShanxiProvince,fromstrongtoweak,wasintheorderofsouthernShanxi,CentralShanxiandNorthernShanxi,andthereweresignificantregionaldifferencesonlyincarbonfixationandoxygenrelease.Throughanalysis,itisconcludedthatthemainfactorsthataffectthedifferenceofunitareamatterqualityarethestructuralcompositionofforestresources,climatefactorsandregionalfactors.KEYWORDS：Forestecosystemservices；Materialquality；MassperunitareaPAGE\*MERGEFORMAT2目录1研究地区的概况............................................................42研究方法..................................................................42.1评估指标............................................................42.1.1涵养水源........................................................42.1.2保育土壤........................................................52.1.3固碳释氧........................................................52.1.4林木积累营养物质................................................52.1.5净化大气环境功能................................................62.1.6生物多样性保护价值..............................................62.1.7森林游憩价值....................................................63结果与分析.................................................................63.1山西省各地级市森林生态系统服务功能物质量评估........................73.1.1涵养水源........................................................73.1.2固碳释氧........................................................83.1.3净化大气环境....................................................83.2单因素方差分析......................................................84结论与讨论................................................................9PAGE\*MERGEFORMAT2引言森林中蕴含着丰富的资源，作为基因库、储水库、能源库以及碳存库存在于地球之上，对地球生态平衡有着决定性作用，是陆地生态系统之最，为人们生存与进步提供资源，并进行良好...